– User and Installation Manual
4.5.2 AC wiring
The ground wire offers protection only if the case of the CombiMaster Inverter/Charger is
connected to the safety ground. Connect the ground terminal (PE / GND) to the hull or the
chassis of the boat or vehicle that this CombiMaster Inverter/Charger is equipped on.
For safety reasons Ground Fault Circuit Interrupters (GFCIs), also known as Residual
Current Devices (RCDs), must be integrated in the AC input and AC output of the
CombiMaster Inverter/Charger. Always comply with all local rules and regulations.
For the isolation transformer that is used at the AC input, choose a transformer with at least
2x the total inverter power of the units. Too small a transformer causes unstable behavior!
For a safe installation the correct wire cross section must be applied. Don’t use a cross section that is
smaller than indicated. When cables are longer than 10 feet [3m], the size should be increased (one
size over) to compensate for cable losses. Maximum AC breaker size:
Model 12/1500-60, 12/2000-100, 12/3000-160,
12/3500-200, 24/3500-100,
2
2
AC output circuit breaker 40A (10 AWG [6 mm
2
] wire) 85A (6 AWG [16 mm
2
] wire)
* or less when the AC supply is rated for lower value
Recommended wire colors 120V
AC single-phase (refer to local rules):
Black Hot or Line L
White Neutral N
Green Ground